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A [[Shura-Bura's Program|chess program]] was already written in developed around 1961 supposedly under direction of [[Mikhail R. Shura-Bura]] at the [https://en.wikipedia.org/wiki/Steklov_Institute_of_Mathematics Steklov Institute of Mathematics] under direction of [[Mikhail R. Shura-Bura]] <ref>[[Jaap van den Herik]] ('''1983'''). ''Computerschaak, Schaakwereld en Kunstmatige Intelligentie''. Ph.D. thesis, [[Delft University of Technology]]. Academic Service, The Hague. ISBN 90 62 33 093 2 (Dutch), 2.2.9. Sjoera-Boera</ref> <ref>[http://www.schachcomputer.at/gesch6.htm Schachcomputer - Geschichte - 6] by [[Karsten Bauermeister]] (German)</ref> <ref>[http://www.dsk1931ev.de/Computerschach/computer.htm Computerschach - ein Überblick] von Mathias Grontzki (German)</ref>, presumably running on a M-20.